Beth-El filtration systems can be connected to gas masks via a manifold for vehicles that are open or unsealed. The ventilation / filtration system incorporates the same properties as the regular VM systems, filtering sand, dust, fine dust, and NBC particulates, as well as being able to incorporate air conditioning, which is supplied directly to the masks and protective suits. These systems create a mild, constant overpressure inside each face mask and suit, allowing free movement and very easy breathing inside an individually protected environment.